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How can I get Text values that appear as numbers sort in 'numeric' order in a datagrid?

Posted on 2007-03-23
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Last Modified: 2010-04-23
I have database columns that are defined as Text. One, labeled PartID sometimes has values such as 1,2,3...etc. The problem is when I want to sort in a d dataGrid, it will  sort like 1,11,12,2,3,32,4...etc. How can I get it to sort as if they were consecutive numbers? The fielf is defined Text because more often than not, the value may be alpha in nature too. Thank you in advance for code examples.
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Question by:IT_Steve
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LVL 18

Expert Comment

by:Ajay Sharma
ID: 18784692
use this

select convert(int, partId) from demo order by convert(int,partid) asc
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Author Comment

by:IT_Steve
ID: 18788276
I apologize for forgetting to include I am using Access for my database.  I have not found a way to make your suggestion work. Is that for stored procedures? I will need a solution that can deal with values such as 1,2,3..,Dave's-40,SJ,... etc.
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LVL 27

Accepted Solution

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planocz earned 500 total points
ID: 18789802
The only way to get around it is to format that field to have a leading zero if the number is between 1 and 9.
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LVL 18

Expert Comment

by:Ajay Sharma
ID: 18790803
use it like this

    Dim ds As New DataSet
    Dim da As SqlDataAdapter
    Dim sql As String
    Dim myConnection As SqlConnection
    Dim ConnStr As String = "ur connection string here"

            myConnection = New SqlConnection(ConnStr)

            sql = "select convert(int, partId), partname,partdesc,allothercolumns from demo order by convert(int,partid) asc"
            da = New SqlDataAdapter(sql, myConnection)
            da.Fill(ds, "demo")

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Author Comment

by:IT_Steve
ID: 18792716
Ajaysharmaapjs -
When I try the code you suggest, I get the error: Undefined function 'Convert' in expression. I am using VB.NET 2003. Perhaps Convert is a built in method in 2005? But I was wondering how it willl behave if the partID was 'Steve'sWidget4'? Remember, some partID look numeric, 1,72,4, but many are mixed like 'Steve'sWidget4' or all alpha chars 'NinethParcel'.

Planoz -
I was hoping to avoid the 0 but may be resigned to that. I will wait awhile to see if there are other suggestions.
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Author Comment

by:IT_Steve
ID: 18800070
Planoz - Your solution answered my question as asked and works. I was intrigued by Ajaysharmaapjs 's Select CONVERT(... concept but it didn't work for me.  Thank you for your ideas.
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